Bill Portland's 2019 Blue SZ5 Topic

GeorgeC wrote: An old Aviation truth,
knowing the difference between the Usable Fuel Quantity
and the Fuel Tank Capacity

stiffsteve204me wrote:

Andy2640 wrote:

Bill Portland wrote: The engine seems to be freeing up nicely.
I drove for 28 miles after the low fuel light came on and could still only get 33 litres in. So there's plenty left in reserve when it says its empty (unless it's not really got 40 litres capacity)

Oh, the trip computer said it had done 46.4mpg, so not quite as accurate as I'd thought, but pretty close.

Nice observations Bill. Appreciated.

I noticed that the gauge indicated low fuel at around 28-30 miles. One minute my expected milage is at these numbers, and then dissapears and goes to "low fuel" and the light comes on. So when you did another 28miles, that would technically place you at empty. My thinking is that as with "sell by dates" there is a large margin of error/safety applied. So with your figures above, I would guess that the 7 remaining litres you calculated would be the "margin of error". So in theory the car probably has another 40 to 60 miles remaining, even after your 28 miles driven from the point of "low fuel" light. (depending on your MPG)??? Seems like a rather large margin though doesnt it??

New thread.... who's gonna test this theory with a jerry can and run there motor to "no fuel"??? Count me out

Im open to corrections

I don't think that you are far out, Andy.

I had Low Fuel warning light on, zero Range showing, and could only get around 30 Ltr. in. That was a "to the neck" fill, so I would guess there would have been 8-10 litres left.


No, I am not going to put it to the test.



Steve.

Andy2640 wrote:

stiffsteve204me wrote:

Andy2640 wrote:

Bill Portland wrote: The engine seems to be freeing up nicely.
I drove for 28 miles after the low fuel light came on and could still only get 33 litres in. So there's plenty left in reserve when it says its empty (unless it's not really got 40 litres capacity)

Oh, the trip computer said it had done 46.4mpg, so not quite as accurate as I'd thought, but pretty close.

Nice observations Bill. Appreciated.

I noticed that the gauge indicated low fuel at around 28-30 miles. One minute my expected milage is at these numbers, and then dissapears and goes to "low fuel" and the light comes on. So when you did another 28miles, that would technically place you at empty. My thinking is that as with "sell by dates" there is a large margin of error/safety applied. So with your figures above, I would guess that the 7 remaining litres you calculated would be the "margin of error". So in theory the car probably has another 40 to 60 miles remaining, even after your 28 miles driven from the point of "low fuel" light. (depending on your MPG)??? Seems like a rather large margin though doesnt it??

New thread.... who's gonna test this theory with a jerry can and run there motor to "no fuel"??? Count me out

Im open to corrections

I don't think that you are far out, Andy.

I had Low Fuel warning light on, zero Range showing, and could only get around 30 Ltr. in. That was a "to the neck" fill, so I would guess there would have been 8-10 litres left.


No, I am not going to put it to the test.



Steve.

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That interesting Steve, does yours actually show 0 miles on the LCD? Mine dissapears after an indicated 28-30 miles. Thanks.

Bill Portland wrote: I wasn't sure about this at first, but it's growing on me

Bill Portland wrote: I wasn't sure about this at first, but it's growing on me